drop obsolete syslog.target from lxc.service.in
drop obsolete syslog.target from lxc.service.in

the target is obsolete since systemd v38 which everybody should have.

original patch by Daniel Baumann

Signed-off-by: Evgeni Golov <19053590b75b2e27abe838a7e75cee7f61ba3686@debian.org>

QingweiPeterLan/cs188-lxc,QingweiPeterLan/cs188-lxc,QingweiPeterLan/cs188-lxc